scholarly journals Construction and safety aspects for the arrangement of mobile explosive deposits

2022 ◽  
Vol 354 ◽  
pp. 00032
Author(s):  
Robert Laszlo ◽  
Stefan Ilici ◽  
Aurelian Nicola ◽  
Stefan Usurelu ◽  
Ionut Zamblau
Keyword(s):  
High Capacity ◽  
Road Construction ◽  
National Legislation ◽  
Safety Requirements ◽  
Safety Aspects ◽  
Explosive Materials ◽  
Long Duration ◽  
Building Demolition ◽  
Small Capacity ◽  
Storage Facilities

The execution of the blasting works involves the management of the problem of storage of explosive materials. This aspect is easier to solve in the case of mines activities with long exploitation time and where storage capacities are arranged, according to the legislation that provides constructive and safety criteria depending on the type and quantity of explosive materials stored. In the case of isolated blasting works, those for road construction, building demolition, underwater or forestry, etc., storage facilities must be arranged for shorter periods of time and smaller capacity, but which must comply with security, environmental and risk requirements, such as high-capacity deposits with long duration of activity. Considering that for the execution of such blasting works, the national legislation provides the possibility of arranging temporary explosive depots, of small capacity, but without specifying the constructive details and the necessary safety requirements to be observed, mentioning only that they must be executed on the basis of a specialized project. This paper presents a series of tests conducted by INSEMEX, in order to establish recommendations regarding the constructive and safety requirements that must be observed when designing and building mobile explosive depots.

scholarly journals Review of Safety Requirements Regarding Trading and Storing of Pyrotechnical Articles in Poland

2020 ◽  
Vol 56 (2) ◽  
pp. 76-90
Author(s):  
Marzena Półka ◽  
Dorota Bielesza ◽  
Anna Szajewska
Keyword(s):  
Blast Wave ◽  
Human Life ◽  
Explosive Load ◽  
Safety Requirements ◽  
Clear Cut ◽  
Dangerous Goods ◽  
Class 1 ◽  
And Storage ◽  
Storage Facilities

Aim: The objective of the paper was to identify and analyse relevant requirements regarding the safety of storage and usage of pyrotechnic materials, intended for civil use. The review was based on binding applicable Polish and European legal acts. The results of the review pointed to the ambiguity of the provisions regulating the issues of safe usage and storage of pyrotechnical materials. Introduction: Some pyrotechnic articles, when triggered by a proper impulse, can lead to a violent reaction resulting in the release of a large amount of heat, and the creation of a blast wave. The effects of this reaction have a destructive impact on buildings situated nearby and pose a hazard to human life. Use and storage of pyrotechnic articles against the set rules is associated with the risk of fire or explosion, therefore a number of requirements have been introduced in this area. Methodology: In Poland there are many legal acts applicable to explosives. One of the most important one is the Act of 21 June 2002 on explosives designated for civil use, which presents pyrotechnic materials with respect to the safety of their usage and storage. Several key requirements have also been specified in agreements ratified in Poland and in other international acts, such as for example: the European Agreement concerning the International Carriage of Dangerous Goods by Road(ADR), and the Directive of the European Parliament and of the Council 2013/29/EU of 12 June 2013 on the harmonisation of laws of the Member States relating to the making available on the market of pyrotechnic articles. Results: It was established that there is a need of adopting a legal solution for storing pyrotechnical products for temporary sales in containers located near commercial facilities (and serving as back-up facilities). Although the regulations are not clear-cut, such a solution is used in practice, thus it would be advisable to determine by means of legal acts whether it is permissible and what requirements should be fulfilled, for example by a container, in which pyrotechnic articles are temporarily stored. Conclusions: The specification presented in the article allows to see the need to minimize the hazards associated with the marketing of pyrotechnical materials and justifies the necessity of adopting a particularly diligent classification and use of nomenclature for these products. In case of storing pyrotechnical materials, it is erroneous to adopt the determination of class “G” for two variable of net mass values of the explosive (when determining safe distances for explosive storage facilities, including among others class 1, sub-classes 1.3, 1.4). The same applies to the hexogen equivalent of an explosive load (when determining safe distances for explosive storage facilities including class 1, sub-classes 1.1, 1.5 and 4.1). Such provisions are misleading and may cause erroneous interpretations of regulations.

Locally Available Aggregate and Sediment Production

2003 ◽  
Vol 1819 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Randy B. Foltz ◽  
Mark Truebe
Keyword(s):  
Road Construction ◽  
Forest Road ◽  
Sediment Production ◽  
Magnitude Range ◽  
Long Duration ◽  
Order Of Magnitude ◽  
Equivalent Test ◽  
Basic Characteristics ◽  
Material Tests ◽  
Selection Of

Selection of suitable locally available materials to build strong and durable roads with aggregate surfaces is desired to minimize road construction and maintenance costs and to minimize the detrimental effects of sedimentation. Eighteen aggregates were selected from local sources in Idaho, Oregon, South Dakota, and Washington State. Aggregate was placed in shallow metal frames and compacted to simulate a forest road. The levels of runoff and sediment from a highintensity, long-duration simulated rainstorm were measured. The material tests selected for use in the study included ones that define the basic characteristics of the aggregate, along with a number of tests intended to predict susceptibility to erosion. Each of the tests was statistically evaluated to identify those that best predicted the perceived aggregate quality. The two best indicators of aggregate quality were the results of the sand equivalent test and the P20 portion of the Oregon air degradation test. The best indicator of either runoff or sediment production was the fraction passing the 0.6-mm sieve. Acceptable aggregates, both those of good quality and those of marginal quality, exhibited a 2-order-of-magnitude range in both runoff and sediment production.

Methodology for Calculating Minor Radioactive Releases From VVER 1000 Using TRACE Code

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
M. Ruscak ◽  
G. Mazzini ◽  
A. Dambrosio ◽  
A. Musa
Keyword(s):  
Power Plant ◽  
Severe Accident ◽  
Safety Requirements ◽  
Design Basis ◽  
Long Duration ◽  
Wide Range ◽  
Reduce Risk ◽  
Fukushima Daiichi ◽  
Accident Conditions ◽  
Action Levels

Abstract After the Fukushima DAIICHI accident, new safety requirements were imposed in order to reduce risk of severe accident. One of the principles that have been adopted is the introduction of emergency action levels resulting from the expected consequences. They cover a wide range of component and system malfunctions resulting in emergency, incident, and/or accident conditions. To evaluate those emergency action levels, thermal hydraulic (TH) analyses simulating these malfunction/incident/accident conditions are required. This paper describes the simulation of a real operational incident scenario using a standard thermal hydraulic model of the power plant in the TRACE code that was originally intended for simulation of design basis accidents such as large break coolant accident or loss of flow accident. Special attention was given to the methodology, addressing a long duration of an incident with corrective actions of the operators, and to computational issues leading to model modifications caused by a long duration of the incident along with the necessary conservatisms in the estimated results of the simulated radioactivity release.

scholarly journals Safety aspects of GH replacement

2009 ◽  
Vol 161 (suppl_1) ◽  
pp. S65-S74 ◽  
Author(s):  
Johan Svensson ◽  
Bengt-Åke Bengtsson
Keyword(s):  
Replacement Therapy ◽  
Cardiovascular Mortality ◽  
Safety Profile ◽  
Mortality And Morbidity ◽  
Gh Replacement ◽  
Safety Aspects ◽  
Long Duration

In adults, GH replacement therapy will often be maintained for decades. Owing to the long duration of GH replacement in many adults, it is essential to establish the long-term safety aspects of the treatment. In this review, studies that have investigated the safety profile of long-term GH replacement will be reviewed with an emphasis on studies based on data from the Pfizer International Metabolic Database (KIMS). These studies show that long-term GH replacement in adults is safe and that long-term GH replacement may even improve cardiovascular mortality and morbidity in GH-deficient adults.

Origin of High Capacity and Poor Cycling Stability of Li-Rich Layered Oxides: A Long-Duration in Situ Synchrotron Powder Diffraction Study

2018 ◽  
Vol 30 (11) ◽  
pp. 3656-3667 ◽  
Author(s):  
Karin Kleiner ◽  
Benjamin Strehle ◽  
Annabelle R. Baker ◽  
Sarah J. Day ◽  
Chiu C. Tang ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Powder Diffraction ◽  
High Capacity ◽  
Cycling Stability ◽  
Layered Oxides ◽  
Synchrotron Powder Diffraction ◽  
Long Duration

scholarly journals The Exploration of Hazard Prediction Techniques and Security Management Strategies for Domestic Road Construction

2015 ◽  
Vol 9 (1) ◽  
pp. 974-978
Author(s):  
Chenhao Guo ◽  
Yapeng Yan ◽  
Tiansong Wang
Keyword(s):  
Comprehensive Evaluation ◽  
Rapid Development ◽  
Management Strategies ◽  
Security Management ◽  
Road Construction ◽  
Construction Site ◽  
Management Measures ◽  
Long Duration ◽  
Prediction Techniques ◽  
Security Incidents

With the rapid development of the economy in China and the speeding up of urbanization, urban roads and highways in China continue to increase. However, due to some of the characteristics of road construction, long duration, high fluidity, large volume of work and complex process, there exist many security problems during the period of construction, which determines that security management is unoptimistic on construction site. This paper makes a comprehensive research over the achievements of domestic and foreign experts and analyzes the causes of the security incidents in domestic road construction, so as to further clarify that the deep reasons for the security incidents in management. Based on this, the author advances the corresponding security management measures. With comprehensive evaluation methods applied on road construction site, the security situation can be predicted and prevented whenever and wherever possible.

scholarly journals Quantum of Building Demolishied Debris Associated with Urban Road Construction in Gombe City, Nigeria

2021 ◽  
Vol 4 (3) ◽  
pp. 1-11
Author(s):  
Bashir U.M. ◽  
Dukku S. J. ◽  
Suleiman S.
Keyword(s):  
Road Construction ◽  
Urban System ◽  
Sampling Technique ◽  
Simple Random Sampling ◽  
Primary Data ◽  
Demolition Waste ◽  
Urban Road ◽  
New Material ◽  
Quantitative Design ◽  
Building Demolition

Demolition activity is deeply embedded in the urban system. In recent times, infrastructural development in Nigeria’s major cities has led to increase in road construction activities associated with demolition of hundreds of houses from which millions of tons of Demolition Waste have been generated. However, it is widely reported in many studies globally that demolition debris is such waste that can be re-used. Though, this is not the case in Gombe due to paucity of information on its composition, size and quantities. Hence, the objective of this study is to determine the volumetric composition of generated demolition debris in Gombe City with a view to knowing the potential quantities available for re-use. The study used both qualitative and quantitative design approach. A simple random sampling technique was employed to select 13 roads which were sub-divided in to Lot 1 (8.33km) and Lot 2 (15.04km) and the period of 2011-2014 was considered for the study. Primary data kept by actors and authorities for the compensation assessment which do not refer to demolition debris quantities were used as the bases for extraction of quantities. Handheld (GPS) instrument was used in establishing coordinates; photographs were taken from different locations showing demolition activities taking place and composition of different materials debris. Results revealed that a total of 1,271 structures were evaluated after partially or fully demolished for street widening and/or to pave way for new road construction, in addition a total volume of 129,993.57m3 of Demolished Debris was generated which composed of 10.00% Concrete, 60.30% Sandcrete and 29.69% clay/mud. In conclusion, there exist huge quantities of building demolition debris from street widening and/or new road construction in Gombe city which can be put in to re-use as a component of urban road construction, where properly managed will go a long way to reducing environmental adverse effect due to excessive exploitation for new material.

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